Furnace wall



M. LIPTAK July 24, 1923- FURNACE WALL Filed April 24 1922 ill enemas July as, less.

A enacts earner clerics.

MICHAEL LIPTAK, OF ST. PAUL, MINNESOTA, ASSIGNOBJ TO A. JP. GREEN FIRE BRICK OOMTANY, OF IvIlEXEOO, MISSOURI, A CORPORATION OF MISSOURI.

FURNACE WALL;

Application filed April as, 1922. serial no. aaaiee.

T all whom it may concern.

Be it known that 1, MICHAEL LIPTAK, a citizen of the United States, residin at St. Paul, in the county of Ramsey and tate of Minnesota, have invented certain new and useful Improvements in Furnace Walls; and I do hereby declare the following to be a full, clear, and exact description of the invention,- such as will enable others skilled in the art to which it appertains to make and use the a same.

My present invention relates to wall structures and is in the nature of a modification of the wall structure disclosed and claimed in my pending application filed by me of date April 24, 1922, Serial No. 556,195 and entitled Furnace wall.

Generally stated, the invention consists of the novel construction, combination and arrangement of parts hereinafter described and defined in the claims.

This improved wall is especially adapted for use as a furnace wall or where it will be subjected to intense heat, and which, therefore, will require frequent repairs or replacements of the tiles or fire bricks that are exposed to the flames. My invention provides a wall structure having a replaceable innerwall that may be readily replaced either in whole or in part at comparatively low cost.

Inthe accompanying drawings, which illustrate my invention, like characters indicate like parts throughout the several views.

Referring to the drawings:

Fig. 1 is a fragmentary perspective showing a wall embodying my invention, and illustratingthe manner in which certain of the parts of the replaceable inner wall may be removed without disturbing other portions thereof; I

Fig. 2- is a perspective showing one of the sill-forming blocks;

Fig. 3 is a perspective view showing the three elements or sections of one of the complete shelfiforming blocks, the said elements being slightly separated;

Fig. 4: is a perspective showing one of the pilaster-forming blocks;

Fig. 5 is a perspective showing one of the lintels; and

Fig. 6 is a perspective showing one of the key blocks.

lln this improved wall, as in the wall in my accompanying application, the complete wall structure is designed for an outside wall and is made up of what may be designated as a permanent outer masonry wall and a replaceable high refractory inner wall. In the preferred construction, the permanent outer wall is faced with fire bricks or blocks which become a permanent part of said outer wall. The common bricks or a permanent outer wall may be laid in any desirable number of horizontal courses, and this common brick masonry is faced with fire bricks 8. Sill-forming blocks 9 are built into the permanent outer wall and preferably extended completely through the same and form a continuous horizontal layer or course. Built upon the abutting ends of the sill-forming blocks 9 are short pilasters which, as shown, are made up of fire tiles or blocks 10 and fire bricks 11, the latter being placed on the former. For all purposes, the blocks 10 on opposite sides are formed with anchoring beads or bulges 12.

The pilasters are capped by lintels 13 in the form of large, fiat fire tiles or blocks that span the space between columns and form a horizontal layer which preferably does not extend back through the common brick masonry 7. The co-operating sillforming blocks, pilasters and lintels form in the inner face of the permanent outer wall vertically spaced horizontal rows of rectangular pockets that extend back into i but not through the common brick masonry 7.

The replaceable inner wall should be made up entirely of highly refractory bricks, tiles or blocks, and this replaceable inner Wall is made up chiefi of-horizontal belts, of fire bricks 14:, but etween the belts are interposed horizontal layers of shelf-torming blocks or tiles, which, in accordance with my present invention, are made up of complemental sections which, when removed, have the same horizontal width as the rectangular pockets in the permanent ,wall structure. As clearly shown on the drawings, these sectional shelf-forming blocks are made up of a central block 15 and two outer blocks 16. The complemental shelf-forming block sections 15, 16-46, in vertical cross sections, preferably have the same dimensions as ordinary commercial bricks, but in length they are preferably longenough to extend through the replaceable inner wall and to the backs of the pockets of the permanent' outer wall.

In their outer edges, the outside blocks 16 are formed with crevices or notches 17 that fit the lock beads 12of the pilaster blocks 10 In removing the complemental blocks 15 and 16, the outside blocks 16 must be first positioned and then th intermediate block 15 is inserted between them, thereby interlocking them by the pilaster blocks 10. When key blocks 18 are inserted or placed on the tops of said blocks 15' and 16 and forced into the space between the same and the under surfaces of the overlying lintels 13. Preferably the key blocks 18 have approximately the cross-section of a fire brick and preferably are tapered, and the under surfaces of the lintels are beveled at 13 to fit the taper thereof. The horizontal space between the shelf-forming blocks 15 and 16 is filled in by fire bricks 19. The belts of fire bricks 14, as is evident, are built upon the projecting portions of the shelf-forming blocks 15 and 16 and fill the space between the vertically spaced horizontal rows thereof.

It should be noted that the pilaster-forming blocks 10 have approximately the same vertical dimensions as the shelf-forming blocks 15 and 16, so that the beads 12 thereof do not come into alignment with the key.

blocks 18, the latter being aligned with the rectangular bricks or blocks 11 of said pilasters.

Fig. 1 illustrates clearlythe fact that one or more of the bricks or blocks of the replaceable inner wall may be readily removed and replaced without disturbing other bricks or blocks that may not have been damaged.

As a further important feature of this invention, it should be noted that thQ brick work 14 of the replaceable inner wall is spaced from the brick work of-the permanent wall so as to form an air passage 20, and it is further important to note that the filling bricks19 are terminated short of the inner face of the permanent wall so as to leave vertical air passages 21. This ives communication between theseveral horizontally extended air passages 20 and afiords means for circulating or drawing in air to be introduced into the furnace after it has been superheated.

What I claim is:

1. A composite furnace wall comprising a permanent masonry outer wall having horizontally spaced pilasters and intervening poc'ketsfin combination with a high refractory inner wall including shelf-formin blocks that project into the pockets of sai permanent outer -wall, said shelf-forming lock sections.

2. A composit furnace wall comprising a permanent masonry outer wall having horizontally spaced pilasters and intervening pocket, said pilasters having lock projections, in combination with a high refractory inner wall including shelf-forming blocks that project into the pockets of said permanent outer wall, said shelf-forming blocks comprising outside and intermediate sections, the former having notches that engage the projections of said pilasters and interlock therewith.

3. The structure defined in claim 1 in further combination with key blocks inserted between said shelf-forming blocks and the overlying lintels.

4. The structure defined in claim 2 in further combination with key blocks inserted between said shelf-forming blocks and the overlying lintels.

5.' A composite furnace wall comprisin a permanent masonry wall and a replacea le wall. the latter having shelf-forming blocks seated in said permanent wall, the said two walls bein'g spaced to form an air passage therebetween, said shelf-forming blocks being arranged in vertically spaced horizontal rows and spaced apart in said horizontal rows, and filler blocks in said replaceable wall located between said shelf-forming blocks and spaced from said permanent wall I MICHAEL LIPTAK. 

